Method and device for determining equal-interval large-circle route

A technology for determining a method and a device, applied in the field of a method and a device for determining a distance between great circle routes, can solve problems such as route errors, and achieve the effects of higher accuracy, wide applicability, and expanded application range
CN112651106APending Publication Date: 2021-04-13SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
SHENYANG AIRCRAFT DESIGN INST AVIATION IND CORP OF CHINA
Publication Date
2021-04-13

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Abstract

The invention belongs to the field of aircraft route design, and relates to amethod and device for determining an equal-interval large-circle route. The method comprises the following steps: S1, determining longitude and latitude of a starting point and an end point of a great circle route; s2, according to a positive calculation formula of Gauss-Kluger projection, calculating plane coordinates of the large circle airline corresponding to the starting point and the terminal point; s3, calculating the distance between a starting point and an end point under the plane coordinates of the great circle route; s4, dividing the distance between the starting point and the terminal point under the plane coordinate of the large circle route according to a set interval, and calculating the plane coordinate of each interval point; and S5, converting the plane coordinate of each interval point into longitude and latitude by utilizing a back calculation formula of Gaussian Kruger projection. The problem that traditional Mercator projection seriously deviates from a great circle route in a high latitude area is solved, so that the route is closer to a real earth great circle route, and the economic principle of remote navigation is met.
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Description

technical field

[0001] The present application belongs to the field of aircraft route design, and in particular relates to a method and device for determining an equal-spaced great-circle route. Background technique

[0002] During long-distance voyages, the relative and actual position of the aircraft displayed on the flight route does not match. The real earth is an ellipsoid, so strictly speaking, the flight path between two points at the same altitude is not a straight line, but an arc with the same curvature as the surface of the earth. The route displayed on the on-board display is a straight line between two waypoints, and there will be a large error with the route actually flown by the aircraft. SUMMARY OF THE INVENTION

[0003] In order to solve the above-mentioned technical problems, the present application provides a method and device for determining an equally spaced great-circle route, which is applied to the design of an optimal route for long-distance fligh...

Claims

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